These instruction books provide detailed diagrams and part numbers for the chassis components of both Shelby 427 Cobra and AC 289 Cobra models. They cover various engine configurations, including the 260ci, 289ci, and 427ci Ford V8s, and feature information on the Mark III Cobra's redesigned tube chassis and coil spring suspension. The manuals are noted for their intact and legible pages, offering valuable insights into maintaining these iconic vehicles.